50 grams of water (c=4.186 J/gC) starting at 20 degrees C cools and turns to ice at 0 degrees C. How much heat will be released? *

4,186 Joules of Heat Released

Explanation:

When calculating Specific Heat, it is good to remember two formulas:

And

For this problem, we are using the first eqution to find the missing variable Q or the amount of joules released. The work would look like this:

Hope this Helps!

when [oh-] is 10-5  m, and [h3o+] is 10-9  m, the poh is 5 and ph is 9. again in both cases the sum of ph and poh is 14. however, the hydrogen ion concentration is not always going to be equal to exactly 1 x 10 raised to a negative number. for example, we skipped over the value of 2.0 x 10-7.

am i too late?

explanation: